Andi says "It's more likely a hardware bug that needs to be handled by the
driver maintainer. sata_mv has an pci_enable_msi(). Hardware that reports
MSI capability but breaks when it's actually used is not unheard of."
-sata_mv 0000:00:0a.0: 32 slots 4 ports unknown mode IRQ via MSI
-ata1: SATA max UDMA/133 cmd 0x0 ctl 0xE0A22120 bmdma 0x0 irq 177
-ata2: SATA max UDMA/133 cmd 0x0 ctl 0xE0A24120 bmdma 0x0 irq 177
-ata3: SATA max UDMA/133 cmd 0x0 ctl 0xE0A26120 bmdma 0x0 irq 177
-ata4: SATA max UDMA/133 cmd 0x0 ctl 0xE0A28120 bmdma 0x0 irq 177
+sata_mv 0000:00:0a.0: 32 slots 4 ports unknown mode IRQ via INTx
+ata1: SATA max UDMA/133 cmd 0x0 ctl 0xE0A22120 bmdma 0x0 irq 18
+ata2: SATA max UDMA/133 cmd 0x0 ctl 0xE0A24120 bmdma 0x0 irq 18
+ata3: SATA max UDMA/133 cmd 0x0 ctl 0xE0A26120 bmdma 0x0 irq 18
+ata4: SATA max UDMA/133 cmd 0x0 ctl 0xE0A28120 bmdma 0x0 irq 18
It seems strange that pci_enable_msi() succeeded if the device is not
MSI-capable?